21283029

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63913}}^1$

素因数の和:63956

約数の個数: 12

約数和(自身を含む): 31573516

約数和(自身を除く): 10290487

約数列:

[1, 3, 9, 37, 111, 333, 63913, 191739, 575217, 2364781, 7094343, 21283029]

約数ペア:

[(1, 21283029), (3, 7094343), (9, 2364781), (37, 575217), (111, 191739), (333, 63913)]